gmv_io.h

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// The libMesh Finite Element Library.
// Copyright (C) 2002-2026 Benjamin S. Kirk, John W. Peterson, Roy H. Stogner
 
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
 
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.
 
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
 
 
#ifndef LIBMESH_GMV_IO_H
#define LIBMESH_GMV_IO_H
 
// Local includes
#include "libmesh/libmesh_common.h"
#include "libmesh/mesh_output.h"
#include "libmesh/mesh_input.h"
 
// C++ includes
#include <map>
 
namespace libMesh
{
 
// Forward declarations
class MeshBase;
enum ElemType : int;
 
class GMVIO : public MeshInput<MeshBase>,
              public MeshOutput<MeshBase>
{
public:
 
  explicit
  GMVIO (const MeshBase &);
 
  explicit
  GMVIO (MeshBase &);
 
  virtual void write (const std::string &) override;
 
  virtual void read (const std::string & mesh_file) override;
 
  using MeshOutput<MeshBase>::write_nodal_data;
 
  virtual void write_nodal_data (const std::string &,
                                 const std::vector<Number> &,
                                 const std::vector<std::string> &) override;
 
  bool & binary () { return _binary; }
 
  bool & discontinuous() { return _discontinuous; }
 
  bool & partitioning() { return _partitioning; }
 
  bool & write_subdomain_id_as_material() { return _write_subdomain_id_as_material; }
 
  bool & subdivide_second_order() { return _subdivide_second_order; }
 
  bool & p_levels() { return _p_levels; }
 
  void write_discontinuous_gmv (const std::string & name,
                                const EquationSystems & es,
                                const bool write_partitioning,
                                const std::set<std::string> * system_names=nullptr) const;
 
 
  void write_ascii_new_impl (const std::string &,
                             const std::vector<Number> * = nullptr,
                             const std::vector<std::string> * = nullptr);
 
  void add_cell_centered_data (const std::string &       cell_centered_data_name,
                               const std::vector<Real> * cell_centered_data_vals);
 
  void copy_nodal_solution(EquationSystems & es);
 
private:
 
  void write_ascii_old_impl (const std::string &,
                             const std::vector<Number> * = nullptr,
                             const std::vector<std::string> * = nullptr);
 
  void write_binary (const std::string &,
                     const std::vector<Number> * = nullptr,
                     const std::vector<std::string> * = nullptr);
 
  bool _binary;
 
  bool _discontinuous;
 
  bool _partitioning;
 
  bool _write_subdomain_id_as_material;
 
  bool _subdivide_second_order;
 
  bool _p_levels;
 
  std::map<std::string, const std::vector<Real> * > _cell_centered_data;
 
  void _read_nodes();
  unsigned int _next_elem_id;
  void _read_one_cell();
  ElemType gmv_elem_to_libmesh_elem(std::string elemname);
  void _read_materials();
  void _read_var();
  std::map<std::string, std::vector<Number>> _nodal_data;
 
  static std::map<std::string, ElemType> _reading_element_map;
 
  static std::map<std::string, ElemType> build_reading_element_map();
};
 
} // namespace libMesh
 
 
#endif // LIBMESH_GMV_IO_H